<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
</head>
<body>
<h2>登录</h2>
<p style="color: red" th:text="${msg}"></p>
<form th:action="@{/login}">
<p>用户名：<input type="text" name="username"/></p>
<p>密码：<input type="password" name="password"/></p>
<p><input type="submit" value="登录"/></p>
</form>
</body>
</html>